	varying float intensity;
	
	void main()
	{
		vec4 color;
		
		if (intensity > 0.95)
			color = vec4(1.0,0.5,0.5,1.0);
		else if (intensity > 0.5)
			color = vec4(0.6,0.3,0.3,1.0);
		else if (intensity > 0.25)
			color = vec4(0.4,0.2,0.2,1.0);
		else
			color = vec4(0.2,0.1,0.1,1.0);
	
		gl_FragColor = color;
	}